1. SB:Epithelial Tissue

2. On left side at top of page (in the margin) (Common Features) 1.Free surface: cells that are NOT attached to membrane 2. Nucleus: directs cell activities 3. Basement membrane: site of attachment for lowest layer of cells

3. a.Simple squamous Structure: 1 layer of flat cells Function: Easy/quick O2 & CO2 exchange in lungs & capillaries; filtration Location: Lungs (alveoli, air sacs), walls of capillaries, lining body cavities

4. b. Simple cuboidal Structure: 1 layer of cube shaped cells Function: filtration & absorption; secretion Location: glands;ducts, walls of kidney tubules, ovaries

5. c. Simple columnar Structure: 1 layer of column shaped cells Function: secretion & absorption (nutrients) Location: lines entire digestive tract

6. Add the following to the top margin of page 4 (in yellow) 4. Goblet cells-secrete mucus for lubrication

7. WU: Epithelial Tissue 1.What are the 3 basic cell shapes? 2.What is the difference between simple and stratified epithelium? 3. What type of simple epithelium a.Lines entire digestive tract b.Allows easy/quick gas exchange c.Found in walls of kidney tubules d.Function is secretion & absorption

8. d. Pseudostratified ciliated columnar Structure: 1 layer of cells that appear to be at different heights Function: absorption, secretion, protection (traps debris & sweeps it out) Location: Respiratory tract

9. Add the following to the top margin on the left side 5. Cilia-hairs that sweep debris away from lungs

10. On left side of page 12 Write in the top margin 1.Free surface 2. Nucleus 3. Basement membrane

11. a.Stratified squamous Structure: multiple layers of flat cells at the surface Function: protection against friction Location: esophagus, mouth & outer surface of skin

12. b. Transitional Structure: a modified version of stratified squamous *surface cells= round & bulbous when relaxed & flat when filled Function: allows cells to stretch & store urine Location: bladder, ureters, urethra